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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
18/06/2024 |
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Data da última atualização: |
31/07/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, S. R. dos; COSTA, L. M. da; SOUZA, C. M. M.; LEAL, G. P. L.; MELLO, D. C.; SILVA, W. T. L. da; CAMÊLO, D. L.; SCHAEFER, C. E. G. R. |
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Afiliação: |
SOIL SCIENCE DEPARTMENT, FEDERAL UNIVERSITY OF VIÇOSA; SOIL SCIENCE DEPARTMENT, FEDERAL UNIVERSITY OF VIÇOSA; FEDERAL RURAL UNIVERSITY OF SEMI-ARID; VEGETAL PHYSIOLOGY DEPARTMENT; FEDERAL UNIVERSITY OF VIÇOSA; WILSON TADEU LOPES DA SILVA, CNPDIA; FEDERAL OF ESPÍRITO SANTO UNIVERSITY; SOIL SCIENCE DEPARTMENT, FEDERAL UNIVERSITY OF VIÇOSA. |
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Título: |
Thermodegradation of organic matter in soils of different mineral composition in Brazil. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Geoderma Regional, v. 37, e00798, 2024. |
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Páginas: |
1 - 10 |
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ISSN: |
2352-0094 |
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DOI: |
https://doi.org/10.1016/j.geodrs.2024.e00798 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT Thermodegradation is an analytical tool that quantifies the loss of organic carbon under increasing temperatures. The degradation process is related to chemical functions and provides data on the stability of soil organic matter (SOM). There needs to be more information about SOM stability in different Brazilian ecosystems. This study aimed to evaluate SOM stability under three tropical environments: Dry Forest, Brazilian Savanna, and Atlantic Forest. Thus, we related thermal stability to soil mineral composition and SOM quality and quantity. We analyzed samples of the surface horizon of four illitic soil profiles sampled in Dry Forest (P1 to P4), three soil profiles in Cerrado (Brazilian Savanna), with predominant 2:1 clay (P5), iron oxide (P6), and gibbsite (P7), and a kaolinite profile from Atlantic Forest (Rainforest) (P8). Mineralogical, chemical, and physical analyses of the soils were studied to better comprehend soils’ behavior under thermodegradation. The thermic treatment was performed by heating air-dried fine earth (ADFE) samples at 100, 200, 300, 400, and 500 ◦C for 2 h. The results were submitted to sigmoidal regression with four points and presented a good curve fit (r2 > 0.99). Dry Forest soils with the most humified SOM presented greater resistance to loss of SOM by the thermic process. However, P7 (gibbsitic clayey soil) stood out and was the most resistant to thermodegradation. P4 was the sandiest soil and showed the curve most affected by the thermal process, indicating the importance of clay content to SOM stability. The results suggest that the TOC (content and quality), calcium content, and clay (content and type) play essential roles in determining the thermostability of SOM in different ecosystems. MenosABSTRACT Thermodegradation is an analytical tool that quantifies the loss of organic carbon under increasing temperatures. The degradation process is related to chemical functions and provides data on the stability of soil organic matter (SOM). There needs to be more information about SOM stability in different Brazilian ecosystems. This study aimed to evaluate SOM stability under three tropical environments: Dry Forest, Brazilian Savanna, and Atlantic Forest. Thus, we related thermal stability to soil mineral composition and SOM quality and quantity. We analyzed samples of the surface horizon of four illitic soil profiles sampled in Dry Forest (P1 to P4), three soil profiles in Cerrado (Brazilian Savanna), with predominant 2:1 clay (P5), iron oxide (P6), and gibbsite (P7), and a kaolinite profile from Atlantic Forest (Rainforest) (P8). Mineralogical, chemical, and physical analyses of the soils were studied to better comprehend soils’ behavior under thermodegradation. The thermic treatment was performed by heating air-dried fine earth (ADFE) samples at 100, 200, 300, 400, and 500 ◦C for 2 h. The results were submitted to sigmoidal regression with four points and presented a good curve fit (r2 > 0.99). Dry Forest soils with the most humified SOM presented greater resistance to loss of SOM by the thermic process. However, P7 (gibbsitic clayey soil) stood out and was the most resistant to thermodegradation. P4 was the sandiest soil and showed the curve most affected by the the... Mostrar Tudo |
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Palavras-Chave: |
Atlantic forest; Brazilian savanna; Chemical stability; Dry Forest. |
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Categoria do assunto: |
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Marc: |
LEADER 02616naa a2200289 a 4500
001 2164920
005 2024-07-31
008 2024 bl uuuu u00u1 u #d
022 $a2352-0094
024 7 $ahttps://doi.org/10.1016/j.geodrs.2024.e00798$2DOI
100 1 $aSANTOS, S. R. dos
245 $aThermodegradation of organic matter in soils of different mineral composition in Brazil.$h[electronic resource]
260 $c2024
300 $a1 - 10
520 $aABSTRACT Thermodegradation is an analytical tool that quantifies the loss of organic carbon under increasing temperatures. The degradation process is related to chemical functions and provides data on the stability of soil organic matter (SOM). There needs to be more information about SOM stability in different Brazilian ecosystems. This study aimed to evaluate SOM stability under three tropical environments: Dry Forest, Brazilian Savanna, and Atlantic Forest. Thus, we related thermal stability to soil mineral composition and SOM quality and quantity. We analyzed samples of the surface horizon of four illitic soil profiles sampled in Dry Forest (P1 to P4), three soil profiles in Cerrado (Brazilian Savanna), with predominant 2:1 clay (P5), iron oxide (P6), and gibbsite (P7), and a kaolinite profile from Atlantic Forest (Rainforest) (P8). Mineralogical, chemical, and physical analyses of the soils were studied to better comprehend soils’ behavior under thermodegradation. The thermic treatment was performed by heating air-dried fine earth (ADFE) samples at 100, 200, 300, 400, and 500 ◦C for 2 h. The results were submitted to sigmoidal regression with four points and presented a good curve fit (r2 > 0.99). Dry Forest soils with the most humified SOM presented greater resistance to loss of SOM by the thermic process. However, P7 (gibbsitic clayey soil) stood out and was the most resistant to thermodegradation. P4 was the sandiest soil and showed the curve most affected by the thermal process, indicating the importance of clay content to SOM stability. The results suggest that the TOC (content and quality), calcium content, and clay (content and type) play essential roles in determining the thermostability of SOM in different ecosystems.
653 $aAtlantic forest
653 $aBrazilian savanna
653 $aChemical stability
653 $aDry Forest
700 1 $aCOSTA, L. M. da
700 1 $aSOUZA, C. M. M.
700 1 $aLEAL, G. P. L.
700 1 $aMELLO, D. C.
700 1 $aSILVA, W. T. L. da
700 1 $aCAMÊLO, D. L.
700 1 $aSCHAEFER, C. E. G. R.
773 $tGeoderma Regional$gv. 37, e00798, 2024.
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| 3. |  | ROSA NETO, C. Comercialização. In: SOUZA, F. de F. (Ed.). Cultivo da melancia em Rondônia. Porto Velho: Embrapa Rondônia, 2008. p. 82-95.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Rondônia. |
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| 16. | | ROSA NETO, C.; MARCOLAN, A. L. Estudo exploratório acerca do comportamento de consumo de mandioca e derivados no Brasil, com ênfase na Região Norte. In: CONGRESSO SOCIEDADE BRASILEIRA DE ECONOMIA, ADMINISTRAÇÃO E SOCIOLOGIA RURAL, 48., 2010, Campo Grande, MS. Tecnologias, desenvolvimento e integração social. Campo Grande, MS: Sociedade Brasileira de Economia, Administração e Sociologia Rural, 2010. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Rondônia. |
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| Registros recuperados : 73 | |
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